## Bharat Gupta is teaching live on Unacademy Plus

RATIO AND PROPORTION Class -15 (Variation part - 1)

Variation When two or more quantities are related upon each other and when one of them is changed, the other(related) quantity is also changed woru dessss.invens relatin] There are two types of variation. (i) Direct Variation (ii) Inverse Variation

Variation When two or more quantities are related upon each other and when one of them is changed, the other(related) quantity is also changed There are two types of variation. (i) Direct Variation : A < (ii) Inverse Variation: rm)

If x varies as y, and y 9 when x 18, find x when y a. 60 b, 30 c. 72 d.18 30

If x varies as y, and y = 9 when x = 18, find x when y = 30 a.60 b. 30 c. 72 d.18 2-

If A varies as B and inversely as C. A is 12 when B is 6 and C is 2. What is the value of A when B is 12 and C is 3? a. 16 b. 25 c. 12 d. 20

If A varies as B and inversely as C. A is 12 when B is 6 and C is 2. What is the value of A when B is 12 and C is 3? a. 16 b. 25 c. 12 d. 20 Ad A 812, c 3 3

A quantity x varies inversely as the square of y. Given that x = 4, when y 3, the value of x when y 6 is: a. 4 b.3 c. 2 d.!

A quantity x varies inversely as the square of y. Given that x = 3, the value of x when y = 6 is: .4 b. 3 . 2 d.1 4, when y 2. 34 k - 36

If x varies inversely as y2-1 and is equal to 24 when y y 5: a. 99 10, find x when b. 101 c. 91 d. 93